Finding the Fourth Proportional to 15,574.72, 21,495 and 8,861.98

Step by Step Solution

1. Step 1: Write the proportion equation
   15,574.72 : 21,495 = 8,861.98 : x
2. Step 2: Convert to fraction form
   15,574.72/21,495 = 8,861.98/x
3. Step 3: Cross multiply
   15,574.72x = 21,495 × 8,861.98
4. Step 4: Simplify right side
   15,574.72x = 190,488,260.10
5. Step 5: Solve for x
   x = 190,488,260.10/15,574.72
6. Step 6: Final answer
   x = 12,230.61